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author | Anatolij Gustschin <agust@denx.de> | 2013-02-04 14:16:02 +0400 |
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committer | Anatolij Gustschin <agust@denx.de> | 2013-02-05 03:29:26 +0400 |
commit | edfcf33cabf29710f12a3bba4a7b3761a918e268 (patch) | |
tree | b9f679459510a074153e0ab63dbceb02f7860eb7 /arch/powerpc/include | |
parent | b2639b5f1d01f218dc95537a1c352b3a551c4dd5 (diff) | |
download | linux-edfcf33cabf29710f12a3bba4a7b3761a918e268.tar.xz |
powerpc/512x: add function for chip select parameter configuration
Add ability to configure chip select (CS) parameters for devices
that need different CS parameters setup after their configuration.
I.e. an FPGA device on LP bus can require different CS parameters
for its bus interface after loading firmware into it. A driver
can easily reconfigure the LPC CS parameters using this function.
Acked-by: Timur Tabi <timur@tabi.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'arch/powerpc/include')
-rw-r--r-- | arch/powerpc/include/asm/mpc5121.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/mpc5121.h b/arch/powerpc/include/asm/mpc5121.h index 8c0ab2ca689c..8ae133eaf9fa 100644 --- a/arch/powerpc/include/asm/mpc5121.h +++ b/arch/powerpc/include/asm/mpc5121.h @@ -53,4 +53,20 @@ struct mpc512x_ccm { u32 m4ccr; /* MSCAN4 CCR */ u8 res[0x98]; /* Reserved */ }; + +/* + * LPC Module + */ +struct mpc512x_lpc { + u32 cs_cfg[8]; /* CS config */ + u32 cs_ctrl; /* CS Control Register */ + u32 cs_status; /* CS Status Register */ + u32 burst_ctrl; /* CS Burst Control Register */ + u32 deadcycle_ctrl; /* CS Deadcycle Control Register */ + u32 holdcycle_ctrl; /* CS Holdcycle Control Register */ + u32 alt; /* Address Latch Timing Register */ +}; + +int mpc512x_cs_config(unsigned int cs, u32 val); + #endif /* __ASM_POWERPC_MPC5121_H__ */ |